Ruuvauskärjet Wera 800/4 Z

The Wera 800/4 Z screwdriver bit is a tough, viscous bit designed for slotted (flat) screws and universal use. It has a flat tip width of 4.5 mm, a 1/4" (6.3 mm) hexagon shank compliant with DIN ISO 1173-F and a total length of 89 mm, providing compatibility with standard bit holders and drivers.

Advantages

This bit combines durable material properties with precise tip geometry to reduce cam‑out and wear during repetitive tasks. The standardized 1/4" hex shank enables quick interchangeability in common holders, while the 89 mm length gives better reach in recessed or hard-to-access screws.

Suitable for

• Assembly and maintenance of machines and equipment with slotted screws
• Electrical and electronic work requiring a 4.5 mm flat tip
• Use with 1/4" bit holders and quick-change chucks

Key specifications

• Type: Slotted (flat) screwdriver bit
• Tip width: 4.5 mm
• Shank: 1/4" hexagon (6.3 mm), DIN ISO 1173‑F compatible
• Length: 89 mm
• Brand: Wera, MPN: 05059489001, EAN: 2050000314230

How to use

Insert the 1/4" hex shank into a compatible screwdriver handle, bit holder or quick‑change chuck until it locks. Select the slotted screw matching the 4.5 mm tip width, apply steady axial pressure and turn the driver to tighten or loosen the screw. For manual operation maintain alignment between tip and slot to avoid damaging the screw head.

Recommendations

For extended life, avoid excessive torque beyond the bit's mechanical limits and keep the tip clean and free of burrs. Replace the bit if the tip shows significant wear or deformation to prevent screw damage.